Re: [cobalt-users] RAQ3i Memory Issues

[Chris Adams <cmadams@xxxxxxxxxx>]

Once upon a time, Marc Seymour <marc@xxxxxxxxx> said:
> The system has a very low usage and is using aprox 190MB ram at the moment.
> Not that we are running out of ram, just seems like an awful lot for a Linux
> box. Our other Linux (Non Cobalt) servers are running exactly the same and
> the ram usage is only 70MB.

This is from a fairly busy RaQ3 here (it has about 60 sites and has been
up about 18 days):

             total       used       free     shared    buffers     cached
Mem:        128180     125476       2704      72824      28576      65304
-/+ buffers/cache:      31596      96584
Swap:       131536       8796     122740

There is nothing wrong here!  Linux uses all available memory for disk
buffers.  See the second line - the "-/+ buffers/cache" one?  It shows
94MB free on a RaQ with 128MB.  Since these boxes do a lot of reading
files from disk and shoving them out to the network, it is natural that
they should use a lot of RAM for buffers.  If anything, a lot of RAM in
use for buffers means that your RaQ is working _more_ efficiently, since
a good bit of hits should be being served out of RAM, never even hitting
the disk.

This one has been a little into swap; probably when we were initially
moving sites onto it (we had to move a bunch when we bought another ISP,
and all the sites on this RaQ are from that move).  We did a lot of tar,
ftp, untar of sites, and had several people hitting the admin interface
simultaneously, which loaded it down a little more than normal.
-- 
Chris Adams <cmadams@xxxxxxxxxx>
Systems and Network Administrator - HiWAAY Information Services
I don't speak for anybody but myself - that's enough trouble.